Determination of Zinc Ion by a Quinoline-Based Fluorescence Chemosensor

Ju Byeong Chae, Hangyul Lee, Cheal Kim

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

A novel fluorescence chemosensor XYQ for detecting Zn(II) was synthesized. XYQ showed fluorescence turn-on to Zn(II) with high sensitivity and selectivity in aqueous media among 19 metal ions. Its binding structure was demonstrated by ESI-MS, Job plot, and 1H NMR titration. The detection limit of XYQ to Zn(II) was 0.53 μM. It is much below WHO drinking water standard (76.0 μM). XYQ could be applied successfully to the test kit and real samples. The fluorescence turn-on process was possibly explained as a chelation-enhanced fluorescence (CHEF) effect with theoretical calculations.

Original languageEnglish
Pages (from-to)347-356
Number of pages10
JournalJournal of Fluorescence
Volume30
Issue number2
DOIs
StatePublished - 1 Mar 2020

Keywords

  • Calculations
  • Fluorescent chemosensor
  • Test kit
  • Zn(II)

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